Fuel Pump Control Circuit Range/Performance Problem
There’s an issue with the fuel pump control circuit performance.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
The computer is detecting that the fuel pump isn’t getting the right signals or isn’t working correctly, which can cause engine performance issues.
What the computer is actually seeing
The PCM (Powertrain Control Module) expects a certain voltage range from the fuel pump circuit, generally between 5V and 12V for correct operation. If the voltage is outside this range, it triggers this code.
What a healthy reading looks like
Fuel pump circuit voltage should be between 5V and 12V under normal operation, and the pump should activate around 30 milliseconds after the ignition is turned on.
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 11. Check the fuel pump fuse for continuity. If blown, replace it and recheck.
- 22. Inspect the wiring and connectors from the PCM to the fuel pump for damage, corrosion, or loose connections. Repair as needed and retest.
- 33. Measure the voltage at the fuel pump connector with a multimeter while cranking the engine. It should be between 5V and 12V. If out of range, check the relay and wiring.
- 44. If voltage is correct, apply power directly to the fuel pump; it should run. If it doesn’t, replace the pump. If it runs, suspect PCM or circuit issues.Confirm relay operation by swapping with a known good one.
- 55. If all else checks out, test the PCM for faults as a last resort.
Common causes
- Open circuit in the fuel pump wiring
- Short circuit in the fuel pump circuit
- Faulty fuel pump
- Bad fuel pump relay
- PCM failure
Typical repair cost
$$
Related codes
Frequently asked questions
Can I drive with this code?
It's not advisable to drive long distances; performance may suffer, and you risk stalling.
Will this code come back after being cleared?
If the underlying issue isn’t resolved, yes, it will reappear.
Why is this related to other codes?
It's common because fuel system components are interrelated; issues with one can affect signal and performance in others.
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